Product Name Square and Rectangular Steel Pipe Standard GBT6728-2002, GBT6725-2002, GBT3094-2000, JG 178-2005, ASTM A500 JIS G3466, EN10210 etc Grade Q195, Q235, Q345, S235JR, St37-2 Diameter 10x10mm to 600x600mm Thickness 0.5mm-20mm Length 5.8m, 6m, 9m, 12m, or other length as request Surface Treatment Oiled more...